ZFS Raid Configuration Multi Disk

[LibreQuest]

It wasn't clear to me on the installer how I would Raid-1 3 sets of drives and then Raid-0 those 3 sets.

Basically

2 x Raid-1

2x Raid-1

2x Raid-1

And Raid-0 the 3 logical drives.

I hope I have explained well what I am looking at doing. If this is not something that can be done from the installer that is ok too. I can set this up after install.

 

[W.hâ/t]

I think this is what you want. If I am not mistaken, zfs automatically add the vdevs as a stripe. You can select shell option if needed.

zpool create ... zroot mirror d0p1 d1p1 mirror d2p1 d3p1 mirror d4p1 d6p1

Anyway you may want to look at zpoolconcepts(7) and raidz.

 

[LibreQuest]

Yes that's what I'm looking for thank you. ??

 

[gpw928]

zpool create ... zroot mirror d0p1 d1p1 mirror d2p1 d3p1 mirror d4p1 d6p1

I was about to say the same thing, except "after install" implies your zroot is separate, and you would be creating an additional "tank".

The device names you choose matter. There's current discussions about attaching a gpart(8) label to each partition, and using the resultant entry in /dev/gpt to identify the partition to zfs.

 

[LibreQuest]

Yes I would prefer to not create after for that reason. But this should work nicely. I want all disks on zroot. It's annoying to have separate storage unless I have a specific purpose for it, vms, games, etc.

 

[SirDice]

You could do the install on the first two mirrored disks. Then after the installation add the second and third mirror sets to the pool.

 

[LibreQuest]

You could do the install on the first two mirrored disks. Then after the installation add the second and third mirror sets to the pool.

I didn't know that was possible. I will consider it. Sounds simpler.

 

[LibreQuest]

I don't know much about raid but I found raid 10 may be useful for what I am needing to do.

 

[SirDice]

It is. RAID 10 is actually RAID 1 + 0. In other words, a striped set of mirrors.